Braggs Mountain, Hwy 10 (Loc. 2) (Carboniferous of the United States)

Also known as Moore & Plummer loc. 4520

Where: Muskogee County, Oklahoma (35.7° N, 95.2° W: paleocoordinates 8.3° S, 32.6° W)

• coordinate stated in text

When: Branneroceras branneri ammonoid zone, Brentwood Shale Member (Bloyd Formation), Morrowan (323.2 - 318.6 Ma)

Environment/lithology: marine; limestone and shale

• Brentwood is 40 to 45 feet thick, the upper 25 feet consisting of fossiliferous marine limestone with thin shales and the lower 18 feet consisting of dark shale. Lithologically the limestone units are highly variable, that is, they feather out, thicken, or coalesce laterally. However, the fossil content is distinctive, with the ammonoid Branneroceras branneri as the primary zone

•fossil for the horizon. The crinoid Arkacrinus dubius is also a very common form in the horizon.

Size class: macrofossils

Collected by Moore and Strimple; Rowett and Sutherland; reposited in the OU, SUI

Primary reference: R. C. Moore and H. L. Strimple. 1973. Lower Pennsylvanian (Morrowan) crinoids from Arkansas, Oklahoma, and Texas. University of Kansas Paleontological Contributions, Echinodermata Article 60(12):1-84 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 128915: authorized by John Alroy, entered by Briony Mamo on 18.06.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Cladida - Diphuicrinidae
Diphuicrinus croneisi
Diphuicrinus croneisi Moore and Plummer 1938 Sea lily
 Dendrocrinida - Scytalocrinidae
Scytalocrinus crassibrachiatus n. sp.
Scytalocrinus crassibrachiatus n. sp. Moore and Strimple 1973 Sea lily